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Java Platform 1.2 Beta 4 |
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java.lang.Object | +--java.awt.image.SampleModel | +--java.awt.image.MultiPixelPackedSampleModel
The following code illustrates extracting the bits for pixel
x,y
from DataBuffer data
storing pixel data
in data elements of type dataType
:
> shift) & ((1 << pixelBitStride) - 1);
Fields inherited from class java.awt.image.SampleModel | |
dataType , height , numBands , width |
Constructor Summary | |
MultiPixelPackedSampleModel(int dataType,
int w,
int h,
int numberOfBits,
int scanlineStride,
int dataBitOffset)
Constructs a MultiPixelPackedSampleModel with given data type, width, height, number of bits per pixel, scanline stride and data bit offset. |
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MultiPixelPackedSampleModel(int dataType,
int w,
int h,
int numberOfBits)
Constructs a MultiPixelPackedSampleModel with the given data type, width, height and number of bits per pixel. |
Method Summary | |
SampleModel | createCompatibleSampleModel(int w,
int h)
Creates a new MultiPixelPackedSampleModel with the specified width and height. |
DataBuffer | createDataBuffer()
Creates a DataBuffer that corresponds to this MultiPixelPackedSampleModel. |
SampleModel | createSubsetSampleModel(int[] bands)
Creates a new MultiPixelPackedSampleModel with a subset of the bands of this MultiPixelPackedSampleModel. |
int | getBitOffset(int x)
Returns the offset in bits into the data element in which it is stored for the xth pixel of a scanline. |
int | getDataBitOffset()
Returns the data bit offset in bits. |
Object | getDataElements(int x,
int y,
Object obj,
DataBuffer data)
Returns data for a single pixel in a primitive array of type TransferType. |
int | getNumDataElements()
Returns the number of data elements needed to transfer one pixel via the getDataElements and setDataElements methods. |
int | getOffset(int x,
int y)
Returns the offset (in data array elements) of pixel (x,y). |
int[] | getPixel(int x,
int y,
int[] iArray,
DataBuffer data)
Returns the specified (single band) pixel in the first element of an int array. |
int | getPixelBitStride()
Returns the pixel bit stride in bits. |
int | getSample(int x,
int y,
int b,
DataBuffer data)
Returns as int the sample in a specified band for the pixel located at (x,y). |
int[] | getSampleSize()
Returns the number of bits per sample for all bands. |
int | getSampleSize(int band)
Returns the number of bits per sample for the specified band. |
int | getScanlineStride()
Returns the scanline stride. |
int | getTransferType()
Returns the TransferType used to transfer pixels via the getDataElements and setDataElements methods. |
void | setDataElements(int x,
int y,
Object obj,
DataBuffer data)
Sets the data for a single pixel in the specified DataBuffer from a primitive array of type TransferType. |
void | setPixel(int x,
int y,
int[] iArray,
DataBuffer data)
Sets a pixel in the DataBuffer using an int array for input. |
void | setSample(int x,
int y,
int b,
int s,
DataBuffer data)
Sets a sample in the specified band for the pixel located at (x,y) in the DataBuffer using an int for input. |
Methods inherited from class java.awt.image.SampleModel | |
getDataElements , getDataType , getHeight , getNumBands , getPixel , getPixel , getPixels , getPixels , getPixels , getSampleDouble , getSampleFloat , getSamples , getSamples , getSamples , getWidth , setDataElements , setPixel , setPixel , setPixels , setPixels , setPixels , setSample , setSample , setSamples , setSamples , setSamples |
Methods inherited from class java.lang.Object | |
clone , equals , finalize , getClass , hashCode , notify , notifyAll , toString , wait , wait , wait |
Constructor Detail |
public MultiPixelPackedSampleModel(int dataType, int w, int h, int numberOfBits)
dataType
- The data type for storing samples.
w
- The width (in pixels) of the region of
image data described.
h
- The height (in pixels) of the region of
image data described.
numberOfBits
- The number of bits per pixel.public MultiPixelPackedSampleModel(int dataType, int w, int h, int numberOfBits, int scanlineStride, int dataBitOffset)
dataType
- The data type for storing samples.
w
- The width (in pixels) of the region of
image data described.
h
- The height (in pixels) of the region of
image data described.
numberOfBits
- The number of bits per pixel.
scanlineStride
- The line stride of the image data.
dataBitOffset
- The data bit offset for the region of image
data described.Method Detail |
public SampleModel createCompatibleSampleModel(int w, int h)
public DataBuffer createDataBuffer()
public int getNumDataElements()
public int[] getSampleSize()
public int getSampleSize(int band)
public int getOffset(int x, int y)
public int getBitOffset(int x)
public int getScanlineStride()
public int getPixelBitStride()
public int getDataBitOffset()
public int getTransferType()
public SampleModel createSubsetSampleModel(int[] bands)
public int getSample(int x, int y, int b, DataBuffer data)
x
- The X coordinate of the pixel location.
y
- The Y coordinate of the pixel location.
b
- The band to return (assumed to be 0).
data
- The DataBuffer containing the image data.public void setSample(int x, int y, int b, int s, DataBuffer data)
x
- The X coordinate of the pixel location
y
- The Y coordinate of the pixel location
b
- The band to return (assumed to be 0)
s
- The input sample as an int
data
- The DataBuffer where image data is storedpublic Object getDataElements(int x, int y, Object obj, DataBuffer data)
The following code illustrates transferring data for one pixel from
DataBuffer db1
, whose storage layout is described by
MultiPixelPackedSampleModel mppsm1
, to
DataBuffer db2
, whose storage layout is described by
MultiPixelPackedSampleModel mppsm2
.
The transfer will generally be more efficient than using
getPixel/setPixel.
MultiPixelPackedSampleModel mppsm1, mppsm2; DataBufferInt db1, db2; mppsm2.setDataElements(x, y, mppsm1.getDataElements(x, y, null, db1), db2);Using getDataElements/setDataElements to transfer between two DataBuffer/SampleModel pairs is legitimate if the SampleModels have the same number of bands, corresponding bands have the same number of bits per sample, and the TransferTypes are the same.
If obj is non-null, it should be a primitive array of type TransferType. Otherwise, a ClassCastException is thrown. An ArrayIndexOutOfBoundsException may be thrown if the coordinates are not in bounds, or if obj is non-null and is not large enough to hold the pixel data.
x
- The X coordinate of the pixel location.
y
- The Y coordinate of the pixel location.
obj
- If non-null, a primitive array in which to return
the pixel data.
data
- The DataBuffer containing the image data.public int[] getPixel(int x, int y, int[] iArray, DataBuffer data)
x
- The X coordinate of the pixel location.
y
- The Y coordinate of the pixel location.
iArray
- If non-null, returns the pixel in this array.
data
- The DataBuffer where image data is stored.public void setDataElements(int x, int y, Object obj, DataBuffer data)
The following code illustrates transferring data for one pixel from
DataBuffer db1
, whose storage layout is described by
MultiPixelPackedSampleModel mppsm1
,
to DataBuffer db2
, whose storage layout is described by
MultiPixelPackedSampleModel mppsm2
.
The transfer will generally be more efficient than using
getPixel/setPixel.
MultiPixelPackedSampleModel mppsm1, mppsm2; DataBufferInt db1, db2; mppsm2.setDataElements(x, y, mppsm1.getDataElements(x, y, null, db1), db2);Using getDataElements/setDataElements to transfer between two DataBuffer/SampleModel pairs is legitimate if the SampleModels have the same number of bands, corresponding bands have the same number of bits per sample, and the TransferTypes are the same.
obj must be a primitive array of type TransferType. Otherwise, a ClassCastException is thrown. An ArrayIndexOutOfBoundsException may be thrown if the coordinates are not in bounds, or if obj is not large enough to hold the pixel data.
x
- The X coordinate of the pixel location.
y
- The Y coordinate of the pixel location.
obj
- A primitive array containing pixel data.
data
- The DataBuffer containing the image data.public void setPixel(int x, int y, int[] iArray, DataBuffer data)
x
- The X coordinate of the pixel location
y
- The Y coordinate of the pixel location
iArray
- The input pixel in an int array.
data
- The DataBuffer containing the image data.
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Java Platform 1.2 Beta 4 |
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